I Was a "Secret Bitch" by Koichiro Miki

5.20

Hiromi is a 26-year-old single woman. She is popular with guys. Her hobby and specialty is getting men to like her using small talk and a shy persona. If a guy confesses his feelings for her, Hiromi leaves them. Hiromi's sharehouse mate Akira and her friend Aya blame Hiromi, calling her "Kakure Bitch" (a type of women who uses innocence to flirt with men). Hiromi does not care. One day, she takes an interest in Tsuyoshi, who works in the same office. She becomes to like him sincerely.